NG Board Discharge System Using Positional Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing board working systems face inefficiencies in identifying and handling non-defective circuit boards, leading to decreased throughput and increased system size due to the need for multiple checking-purpose working machines when multiple inspection machines are present.
Innovation Solution
A board working system that uses a control device with a positional information acquisition unit, memory section, determination unit, and moving mechanism operation control unit to identify and move defective boards to a checking position, allowing a single checking-purpose working machine to handle multiple inspection machines by associating work results with positional information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If a checking-purpose working machine is arranged adjacent to each inspection machine, then the conveyance path of NG boards can be easily identified, but the system size increases significantly when multiple inspection machines are present
Solution Approach 1:
A control device acts as an intermediary between inspection machines and the checking-purpose working machine. It receives inspection results from multiple inspection machines, determines which boards are NG boards, and controls a single checking-purpose working machine to retrieve and check them. This mediator eliminates the need for multiple checking machines while maintaining accurate identification of NG board conveyance paths.
Solution Approach 2:
The control device provides universal functionality by serving multiple inspection machines with a single checking-purpose working machine. It manages the coordination between multiple inspection machines and one checking machine, making the checking machine serve multiple purposes and multiple inspection machines simultaneously, thereby reducing overall system size.
2Device complexity
If the checking-purpose working machine is arranged away from the inspection machine, then the system size is reduced, but the conveyance path identification becomes more difficult
Solution Approach 1:
The control device implements a feedback mechanism by receiving inspection results from inspection machines, using this information to determine which boards are NG boards, and then controlling the checking-purpose working machine to retrieve the correct boards. This feedback loop enables accurate conveyance path identification even when the checking machine is positioned away from the inspection machines.
Solution Approach 2:
The control device serves as an intermediary that bridges the spatial separation between inspection machines and the checking-purpose working machine. It tracks board positions, receives inspection results, and coordinates the retrieval process, enabling accurate NG board identification regardless of physical distance or conveyance path complexity.
3Manufacturing precision
If inspection standards are made strict to ensure quality, then manufacturing precision is improved, but more circuit boards with minor defects are discarded, reducing productivity
Solution Approach 1:
The system implements self-service by enabling workers to directly check NG boards at the checking position without requiring the boards to be transported to separate locations. Workers can visually inspect boards and make immediate decisions about whether to discard them or send them for rework, streamlining the quality control process and reducing unnecessary discards while maintaining high inspection standards.
Data Source
AI summary
A system including multiple inspection machines and an NG board discharge machine which moves an NG board to a checking position visible to a worker. The system acquires positional information of a circuit board during conveyance, and stores the NG board by associating a work result for the NG board with the positional information. In this manner, the positional information of the NG board is acquired. Based on the positional information, it is determined whether or not the circuit board conveyed to the NG board discharge machine is the NG board. When the circuit board conveyed to the NG board discharge machine is the NG board, a checking-purpose working machine discharges the NG board to the checking position.